Neb. Rev. Stat. § 44-3606

Medicare supplement policies shall return to policyholders benefits which are reasonable in relation to the premium charged. The director shall adopt and promulgate reasonable rules and regulations to establish minimum standards for loss ratios of medicare supplement policies on the basis of incurred claims experience, or incurred health care expenses when coverage is provided by a health maintenance organization on a service basis rather than a reimbursement basis, and earned premiums in accordance with accepted actuarial principles and practices.